Answer: Colleen is using a "SECONDARY DATA SOURCE" for her research.
Explanation: Secondary data source is a type of data source, were a researcher uses a data that has already been collected and analysed by another researcher. In this type of data collection, the research is based on comparing a variable using the internet or books to source Information, instead of studying the variable.
Because Colleen has gone to source Information from books in the library and from the internet, she has used the secondary data source. Primary data source is when the researcher has collected all data from studying a variable.